Spanx founder Sara Blakely attends the Massachusetts Conference for News Photo - Getty Images

Spanx founder Sara Blakely attends the Massachusetts Conference for Women at Boston Convention & Exhibition Center on December 8, 2016 in Boston, Massachusetts. Get premium, high resolution news photos at Getty Images

1,101 Sarah Blakely Photos & High Res Pictures - Getty Images

Spanx founder Sara Blakely speaks onstage during the Massachusetts

Spanx founder Sara Blakely attends the Massachusetts Conference for News Photo - Getty Images

Photos: Spanx founder Sara Blakely through the years – KIRO 7 News

1,101 Sarah Blakely Photos & High Res Pictures - Getty Images

1,101 Sarah Blakely Photos & High Res Pictures - Getty Images

Photos: Spanx founder Sara Blakely through the years

1,101 Sara Blakeley Photos & High Res Pictures - Getty Images

1,101 Sara Blakley Photos & High Res Pictures - Getty Images

Spanx founder Sara Blakely attends the Massachusetts Conference

Photos: Spanx founder Sara Blakely through the years – KIRO 7 News

594 Spanx Inc Photos & High Res Pictures - Getty Images

67 Woman Spanx Stock Photos, High-Res Pictures, and Images - Getty

Billionaire Spanx founder Sara Blakely shares her best business advice

Spanx Sara Blakely All Day Shaping Fishnet Floral Tights Very Black A Stocking 2

Spanx founder Sara Blakely learned an important lesson about failure from her dad — now she's passing it on to her 4 kids - Yahoo Sports

Sara Blakely: My Confession

Spanx-sara-blakely- GirlTalkHQ

Sara Blakely On The Origin Story Of Spanx: 'I Was Just A Frustrated